<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
        background: #282C34;
        }
        div {
            position: relative;
            width: 140px;
            height: 80px;
            line-height: 80px;
            text-align: center;
            border-radius: 100px;
            background: conic-gradient(#ff00fa, #fe3, #0f3, #ff00fa);
            padding: 2px;
            -webkit-mask:
                linear-gradient(#fff 0 100%) content-box,
                linear-gradient(#fff 0 100%);
            -webkit-mask-composite: xor;
            color: #fff;
        }
    </style>
</head>

<body>
    <div>icss</div>
</body>

</html>